Question

prove that in a parallelogram if the diagonals are equal and bisect each other at 90° then it is a square ​

Answer 1

Answer:

see in the picture u will understand

Answer 2

Answer:

prove AC = BD, OA = OC, OB = OD, and ∠AOB = 90º. Hence, the diagonals of a square are equal in length. Hence, the diagonals of a square bisect each other. Hence, the diagonals of a square bisect each other at right angles.